Chamberlain 7710CB 10 ft. Chain Drive Rail Extension Kit Tablets Drip free ceramic disc cartridge

Drip free ceramic disc cartridge for drip-free operation

The combination of the unique anti-vibe handle

White painted finish

The frame is laminated for durability

Chamberlain 7710CB 10 ft. Chain Drive Rail Extension Kit Tablets Drip free ceramic disc cartridgeChamberlain 7710CB 10 ft. Chain Drive Rail Extension Kit The Chamberlain 10 ft. Chain Extension Kit includes a rail extension and replacement chain that are compatible with most Chamberlain chain drive models. It is for garage doors up to 10 ft. in height and comes with complete installation instructions. Designed specifically for 7 ft. sectional doors. For use with garage doors up to 10 ft. high Works with most chamberlain chain drive models